帮我解一下题目：1.He did a lot of medical research _____ cancer

帮我解一下题目：1.He did a lot of medical research _____ cancer 麻烦帮我这两道题目解一下 Why did he cut himself this morning?请帮我翻一下 帮我解答下面一道英语选择题...题目;what did he ____at the meeting?A.talk B.say C.speak D.tell 帮我翻译一下.He had a good many friends (英语选择题)帮我看看为什么错What surprised me was ___________ so well.A.what he spoke EnglishB.that he spoke EnglishC.which did he speak EnglishD.what did he spoke English我选了A 请大人针对这道题目分析 We did not catch the train we lift late.A.or B.because C.but D.though 这题题目错了吗,选什么 为什么?Every day he has one of his children buy some food for him.帮我分析一下这句话,包括固定结构.cut up,cut The doctor told her patient to take the medicine at once.And ___A.so he did B.so did he C.so he did too D.did he so请帮我分析下语法,为什么选A how long___ he ____the storybook from the library a,has ,borrowed b,has,kept c,did ,buy d ,has :bough ___Since last month我希望知道的人,可以帮我一下,说明一下理由 我凭语感选了B,麻烦帮我用语法分析一下______that this region was so rich in natural resources.A.Little he knew B.Little did he know C.Little he did know D.Little he had know He did ____ he could____ me with my maths.A.what;to help B.that;help C.which;to help D.what;help帮我看一下选哪一种答案,并说明原因, 谁帮我解一下下面的4道题目 帮我分析三个英语句子题目1.As he went into the building,Mr.Wang came out.As能不能换成When?2.She did ___ she could ___the lost child.He found his parents with the help of the police.A.what; take care of B.and; take care of C.whta; to t 倒装高手请进Only when he had done it___that he had made a mistake.a.he had realizedb.had he realizedc.did he realized.he did realize选择哪个?为什么?我水平太差请说详细一下,谢谢! 帮我做一下这些题目,好吗? 帮我做一下博弈论题目.谢谢 帮我计算一下这些题目. 数学题目,帮我解答一下